Hi @Offspring,
Welcome to the forum and I'm one of the moderators here.
I can see you're facing a difficult decision here and worry you may ruin the relationship between you and the family member.
I can also hear how much you would like to be honest with the person but at the same time knowing this may not be the right time to talk about this.
Every family and every relationship is different and I wonder if you feel that you can talk to other people who were involved before making the deicsion.
Please feel free to explore different topics on this forum through the search bar. You can type in words such as `ITO', `caring for a family', `relationship' to see if what posts come up that is related to the situation you're facing.
I hope you're able to find some posts useful and people here are extremely supportive as well 🙂
Take care,